293 citations · 1.5k across the 67 of their papers we have counts for
8 papers · 2 filters
Revealing Topological Structure in the SU(2) Vacuum
Thomas DeGrand, Anna Hasenfratz, Tamas G. Kovacs
In this paper we derive a simple parametrization of the cycling method developed by us in our earlier work. The new method, called renormalization group (RG) mapping, consists of a…
Vortices and confinement at weak coupling
Tamas G. Kovacs, E. T. Tomboulis
We discuss the physical picture of thick vortices as the mechanism responsible for confinement at arbitrarily weak coupling in SU(2) gauge theory. By introducing appropriate variab…
Instanton Effects in Hadron Spectroscopy in SU(2) (Lattice) Gauge Theory
Thomas DeGrand, Anna Hasenfratz, Tamas G. Kovacs
We describe quenched spectroscopy in SU(2) gauge theory using smoothed gauge field configurations. We investigate the properties of quarks moving in instanton background field conf…
Some remarks on Abelian dominance
Tamas G. Kovacs, Zsolt Schram
We use a renormalisation group based smoothing to address two questions related to Abelian dominance. Smoothing enables us to extract the Abelian heavy-quark potential from time-li…
Topological structure in the SU(2) vacuum
Thomas DeGrand, Anna Hasenfratz, Tamas G. Kovacs
We study the topological content of the vacuum of SU(2) pure gauge theory using lattice simulations. We use a smoothing process based on the renormalization group equation. This re…
Z(2) vortices and the string tension in SU(2) gauge theory
Tamas G. Kovacs, E. T. Tomboulis
We exhibit the appropriate variables allowing the plus-minus (Z(2)) `reduction' of the Wilson loop operator which provides a direct measure of the thin, thick and `mixed' Z(2) topo…